I understand your frustration Elise!!
After China's dental, I had such high hopes and she just went wonky on me....All you can really do is make sure he's well healed and then go back to following the protocol.
Since this dose has gotten him into greens, I'd just hold onto it for awhile longer. You'd think that cats that spent as much time as ours had in green numbers wouldn't bounce like that, but nobody can get them to read the manual that says that!
Hang in there!...and Max!! Come on boy...a little cooperation wouldn't hurt either!!